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A copper cube 0.30m on a side is subject...

A copper cube 0.30m on a side is subjected to a shearing force of `F = 6.0xx10^6N` . Assuming that the shear modulus for copper is `4.2xx10^10 N//m^2` . The angle through which the cube shear is (approximately)

A

`0.09^(0)`

B

`0.15^(0)`

C

`0.21^(0)`

D

`0.32^(0)`

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